In an interview with NBC News, the president also said he assumes his relationship with the tech billionaire is over after their recent falling-out.

U.S. President Donald Trump, in an interview with NBC News on Saturday, said there would be "serious consequences" if billionaire Elon Musk funds Democratic Party candidates to run against Republicans who vote for Trump's sweeping tax-cut bill.

Both Trump and his "border czar," Tom Homan, have said California officials could face arrest if they're perceived as impeding ICE operations.

California National Guard troops were deployed to the streets of Los Angeles on Sunday to help quell a third day of protests over President Donald Trump's immigration enforcement, as the state's Democratic governor called their deployment unlawful.

Gov. Gavin Newsom (D) condemned the Trump administration’s move to send the California National Guard into Los Angeles to help quell immigration protests.